sod soe soi son soo sop sos sou soy spb spc spd spe spi spn spo spp sps spu spy ss- ssb ssc ssd sse ssi ssn sso ssp sss ssu sub suc sud sue sui sun suo sup sus suu suy sy- syb syc syd sye syi syn syp sys syu ubb ubc ube ubi ubn ubo ubp ubs ubu uby ucb ucc ucd uce uci ucn uco ucp ucs ucu udb udc udd ude udi udn udo udp uds udu ueb uec ued uee uei uen uep ues uey uib uic uid uie uii uin uio uip uis uiu un- unb unc und une uni unn uno unp uns unu uny uob uoc uod uoe uon uoo uop uos up- upb upc upd upe upi upn upo upp ups upu usb usc usd use usi usn uso usp uss usu uuc uue uun uus uuu uyc uyi uyo uys uyu ybc ybe ybi ybp ybs yby ycc ycd yce yci yco ycp ycs ycu ycy yde ydn ydo yds ydy yeb yec yed yee yei yen yeo yep yes yey yid yie yii yin yio yip yis ynd yne ynn ynp yns ynu yny yob yoc yod yoe yoi yon yoo yop yos you yoy ypd ypo yps ypu ysb ysc yse ysi yso ysp yss ysu ysy yud yue yui yun yuo yup yus yuu yuy yyb yyc yye yys yyu yyy